package com.easydlna.dlna.dmc;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.widget.AbsSeekBar;

public class VerticalSeekbar extends AbsSeekBar {
    private Drawable mThumb;
    private int height;
    private int width;

    public interface OnSeekBarChangeListener {
        void onProgressChanged(VerticalSeekbar VerticalSeekBar, int progress,
                boolean fromUser);

        void onStartTrackingTouch(VerticalSeekbar VerticalSeekBar);

        void onStopTrackingTouch(VerticalSeekbar VerticalSeekBar);
    }

    private OnSeekBarChangeListener mOnSeekBarChangeListener;

    public VerticalSeekbar(Context context) {
        this(context, null);
    }

    public VerticalSeekbar(Context context, AttributeSet attrs) {
        this(context, attrs, android.R.attr.seekBarStyle);
    }

    public VerticalSeekbar(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public void setOnSeekBarChangeListener(OnSeekBarChangeListener l) {
        mOnSeekBarChangeListener = l;
    }

    void onStartTrackingTouch() {
        if (mOnSeekBarChangeListener != null) {
            mOnSeekBarChangeListener.onStartTrackingTouch(this);
        }
    }

    void onStopTrackingTouch() {
        if (mOnSeekBarChangeListener != null) {
            mOnSeekBarChangeListener.onStopTrackingTouch(this);
        }
    }

    void onProgressRefresh(float scale, boolean fromUser) {
        Drawable thumb = mThumb;
        if (thumb != null) {
            setThumbPos(getHeight(), thumb, scale, Integer.MIN_VALUE);
            invalidate();
        }
        if (mOnSeekBarChangeListener != null) {
            mOnSeekBarChangeListener.onProgressChanged(this, getProgress(),
                    fromUser);
        }
    }

    private void setThumbPos(int w, Drawable thumb, float scale, int gap) {
        int available = w + getPaddingLeft() - getPaddingRight();
        int thumbWidth = thumb.getIntrinsicWidth();
        int thumbHeight = thumb.getIntrinsicHeight();
        available -= thumbWidth;
        // The extra space for the thumb to move on the track
        available += getThumbOffset() * 2;
        int thumbPos = (int) (scale * available);
        int topBound, bottomBound;
        if (gap == Integer.MIN_VALUE) {
            Rect oldBounds = thumb.getBounds();
            topBound = oldBounds.top;
            bottomBound = oldBounds.bottom;
        } else {
            topBound = gap;
            bottomBound = gap + thumbHeight;
        }
        thumb.setBounds(thumbPos, topBound, thumbPos + thumbWidth, bottomBound);
    }

    protected void onDraw(Canvas c) {
        c.rotate(-90);
        c.translate(-height, 0);
        super.onDraw(c);
    }

    protected synchronized void onMeasure(int widthMeasureSpec,
            int heightMeasureSpec) {
        height = View.MeasureSpec.getSize(heightMeasureSpec);
        width = View.MeasureSpec.getSize(widthMeasureSpec);
        this.setMeasuredDimension(width, height);

    }

    @Override
    public void setThumb(Drawable thumb) {
        mThumb = thumb;
        super.setThumb(thumb);
    }

    protected void onSizeChanged(int w, int h, int oldw, int oldh)

    {
        super.onSizeChanged(h, w, oldw, oldh);
    }

    public boolean onTouchEvent(MotionEvent event) {
        if (!isEnabled()) {
            return false;
        }

        switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:
            setPressed(true);
            onStartTrackingTouch();
            trackTouchEvent(event);
            break;
        case MotionEvent.ACTION_MOVE:
            trackTouchEvent(event);
            attemptClaimDrag();
            break;
        case MotionEvent.ACTION_UP:
            trackTouchEvent(event);
            onStopTrackingTouch();
            setPressed(false);
            break;
        case MotionEvent.ACTION_CANCEL:
            onStopTrackingTouch();
            setPressed(false);
            break;
        }
        return true;
    }

    private void trackTouchEvent(MotionEvent event) {
        final int Height = getHeight();
        final int available = Height - getPaddingBottom() - getPaddingTop();
        int Y = (int) event.getY();
        float scale;
        float progress = 0;
        if (Y > Height - getPaddingBottom()) {
            scale = 0.0f;
        } else if (Y < getPaddingTop()) {
            scale = 1.0f;
        } else {
            scale = (float) (Height - getPaddingBottom() - Y)
                    / (float) available;
        }
        final int max = getMax();
        progress = scale * max;
        setProgress((int) progress);
    }

    private void attemptClaimDrag() {
        if (getParent() != null) {
            getParent().requestDisallowInterceptTouchEvent(true);
        }
    }

    public boolean dispatchKeyEvent(KeyEvent event) {

        if (event.getAction() == KeyEvent.ACTION_DOWN) {
            KeyEvent newEvent = null;
            switch (event.getKeyCode()) {
            case KeyEvent.KEYCODE_DPAD_UP:
                newEvent = new KeyEvent(KeyEvent.ACTION_DOWN,
                        KeyEvent.KEYCODE_DPAD_RIGHT);
                break;
            case KeyEvent.KEYCODE_DPAD_DOWN:
                newEvent = new KeyEvent(KeyEvent.ACTION_DOWN,
                        KeyEvent.KEYCODE_DPAD_LEFT);
                break;
            case KeyEvent.KEYCODE_DPAD_LEFT:
                newEvent = new KeyEvent(KeyEvent.ACTION_DOWN,
                        KeyEvent.KEYCODE_DPAD_DOWN);
                break;
            case KeyEvent.KEYCODE_DPAD_RIGHT:
                newEvent = new KeyEvent(KeyEvent.ACTION_DOWN,
                        KeyEvent.KEYCODE_DPAD_UP);
                break;
            default:
                newEvent = new KeyEvent(KeyEvent.ACTION_DOWN,
                        event.getKeyCode());
                break;
            }
            return newEvent.dispatch(this);
        }
        return false;

    }
}
